Heterogeneous Single-Cluster Catalysts for Selective Semihydrogenation of Acetylene with Graphdiyne-Supported Triatomic Clusters

Heterogeneous Single-Cluster Catalysts for Selective Semihydrogenation of Acetylene with Graphdiyne-Supported Triatomic Clusters
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石墨炔支撑三原子团簇用于乙炔选择性半加氢的多相单团簇催化剂

DOI:
10.1021/acs.jpcc.9b02029
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发表时间:
2019-04
影响因子:
3.7
通讯作者:
Li Jun
Li Jun
中科院分区:
化学3区
文献类型:
--
作者:
Xing Deng Hui;Xu Cong Qiao;Wang Yang Gang;Li Jun

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石墨炔(GDY)是一种新发现的新型碳材料,在化学、物理、材料和工业应用方面极具前景。 GDY 独特而天然的孔隙为设计与其碳骨架牢固结合的稳定金属簇催化剂提供了新的前景。我们在这里报告了一项利用密度泛函理论对 GDY 支持的异质表面单簇催化剂 (SCC) 进行的理论研究。该SCC的特点是三原子金属簇牢固地锚定在GDY载体的18元环六边形上,MxM′3-x/GDY(M,M′=Ru,Os),并且可以以显着的选择性将乙炔氢化为乙烯。这一特性归因于团簇中金属原子之间的协同效应以及GDY作为电荷缓冲器的作用。进行最先进的化学键合和微动力学分析,以了解其机理和催化性能。我们的工作强调了稳定锚定的表面隔离金属簇在多相催化中的重要性以及......
Graphdiyne (GDY) is a newly discovered, novel carbon material, highly promising for chemical, physical, material, and industrial applications. The unique yet natural pores of GDY provide a novel prospect to design stable metal-cluster catalysts strongly bonded to its carbon framework. We report here a theoretical study using density functional theory on a heterogeneous-surface single-cluster catalyst (SCC) supported by GDY. This SCC features a triatomic metal cluster strongly anchored on the 18-member ring hexagon of the GDY support, MxM′3–x/GDY (M, M′ = Ru, Os), and can hydrogenate acetylene to ethylene with significant selectivity. This feature is attributed to a synergistic effect among the metal atoms in the cluster and the role of GDY as a charge buffer. State-of-the-art chemical bonding and microkinetic analyses are performed to understand the mechanism and catalytic performance. Our work highlights the importance of stably anchored surface-isolated metal clusters in heterogeneous catalysis and the ...
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